This already was some time ago.

" 'My doctors even advised me to go for a haircut if I wanted to maintain my hair,' she said."

timesofindia.indiatimes.com/articleshow/997962.cms

Her hair looks so thick and healthy on the photos you posted, so maybe the other quote from the above article may have been more of a reason to her decision:

"But there is one thing for sure. Short hair is in and long hair is out. Deboleena was one of the few who was holding fort till now, along with Gargi Roy Chowdhury and June, who still flaunt their Rapunzel tresses."

So get out the scissors and shear off an actress' dozen years of beautiful growth and intensive care just to match some current trend. How sad this is.

Thank you for the beautiful photos!